weblogic服务器上下载zip

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public void dGet(HttpSerletRequest request,HttpServletResponse response) throws ServletException,IOException{

response.setContentType("APPLICATION/ZIP;charset=GBK");?

response.setHeader("Content-Disposition","attachment;filename="test.zip");?

ZipOutputStream zipOut = new ZipOutputStream(response.getOutputStream);?

zipOut.putNextEntry("file1.zip");?

zipOut.write("zip1".getBytes());?

zipOut.putNextEntry("file2.zip");?

zipOut.write("zip2".getBytes());?

zipOut.putNextEntry("file3.zip");?

zipOut.write("zip3".getBytes());?

zipOut.close();?

}

以上代码在resin环境下可以下载到test.zip并可以成功解压
而在weblogic环境下虽然可以下载，但下载后的文件却不能解压，提示 “压缩文件损坏”

将 response.setContentType("APPLICATION/ZIP;charset=GBK"); GBK换成 UTF-8或 ISO8859-1

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